级联长周期光纤光栅的温度特性研究
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摘要
对级联长周期光纤光栅(C-LPFG)的温度敏感特性进行了理论和实验研究。讨论了C-LPFG的谐振波长温度灵敏度与包层模的阶次、光纤光栅周期的关系,进行了20～80℃温度传感实验,实验结果表明,谐振波长与温度成线性响应,升降温数据的重复性比较好,测得其谐振波长温度灵敏度为0.250 1nm/℃、而相同参数的LPFG所测得的谐振波长温度灵敏度为0.131nm/℃。表明,C-LPFG的温度灵敏度远高于同样参数的LPFG。
The temperature response characteristics of cascaded long period fiber grating(C-LPFG,or called as long period fiber grating pair,LPFGP) are researched theoretically and experimental.The relationships between the C-LPFG temperature sensitivity and the order of cladding mode,the period of the long period grating pair are discussed as well.The temperature sensing experiment is done with the temperature ranging from 20 ℃ to 80 ℃.The experimental results show that the C-LPFG resonant wavelength has a linear relation with the time.The data has good repeatability.The resonant wavelength′s temperature sensitivity is 0.250 1 nm/℃,while with the same parameters the LPFG′s temperature sensitivity is 0.131 nm/℃.we can see that C-LPFG temperature sensitivity is higher than that of the LPFG with the same parameters.
The temperature response characteristics of cascaded long period fiber grating(C-LPFG,or called as long period fiber grating pair,LPFGP) are researched theoretically and experimental.The relationships between the C-LPFG temperature sensitivity and the order of cladding mode,the period of the long period grating pair are discussed as well.The temperature sensing experiment is done with the temperature ranging from 20 ℃ to 80 ℃.The experimental results show that the C-LPFG resonant wavelength has a linear relation with the time.The data has good repeatability.The resonant wavelength′s temperature sensitivity is 0.250 1 nm/℃,while with the same parameters the LPFG′s temperature sensitivity is 0.131 nm/℃.we can see that C-LPFG temperature sensitivity is higher than that of the LPFG with the same parameters.
引文
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[4]JIANG Xiu-li,GU Zheng-tian.Parameters optimization ofπ-phase-shifted long period fiber grating for gas sensing[J].Optoelectronics Letters,2011,7(1):22-25.
[5]Venugopalan T,Sun T,Grattan K T V.Temperature char-acterization of Long period gratings written in three differ-ent types of optical fibre for potential high temperaturemeasurements[J].Sensors and Actuators A:Physical,2010,160(1-2):29-34.
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[10]Kieran Mc Evoy,David N Nikogosyan.Realization of peri-odic transmission filter based on a pair of cascaded long-period fibre gratings of different strength/wavelength po-sition[J].Optics&Laser Technology,2012,44(3):683-687.
[11]Hajime Sakata,Kotaro Honda.Temperature-dependenttransmittance of cascaded long-period fiber gratings forsensor applications[J].Microwave and Optical Technolo-gy Letters,2009,51(8):1809-1811.
[12]Samer K Abi Kaed Bey,Cathy Chung Chun Lam,TongSun,et al.Grattan chloride ion optical sensing using along period grating pair[J].Sensors and Actuators A:Physical,2008,141(2-15):390-395.
[13]Wang Z Y,Heflin J R,Kevin V C,et al.Biosensors emplo-ying ionic self-assembled multilayers adsorbed on long-period fiber gratings[J].Sensors and Actuators B:Chem-ical,2009,139(2):618-623.
[14]ZHOU Rui,QIAO Xue-guang,WANG Ruo-hui.et al.Seis-mic wave interrogation system based on the linear edgefilterchracteristics of long period fiber grating[J].Journalof Optoelectronics.Laser,2011,22(7):987-991.周锐,乔学光,王若晖,等.基于长周期光纤光栅线性边缘滤波的地震波解调系统[J].光电子.激光,2011,22(7):987-991.
[15]Samer K,Abi K B,Tong S,et al.Optimizaiton of a long-period grating-based Mach-Zehnder interferometer fortemperature measurement[J].Optics Communications,2007,272(1):15-21.
[16]Ng M N,Chiang K S.Thermal effects on the transmissionspectra of long-period fiber gratings[J].Optics Commu-nications,2002,208(4-6):321-327.
[2]LIU Hong-yue,LIANG Da-kai,ZENG Jie.Long period fibergrating transverse load effect-based sensor for asphaltpavement pressure field measurements[J].Sensors andActuators A:Physical,2011,168(2):262-266.
[3]SHAO Li-yang,Laronche Albane,Smietana Mateusz,etal.Highly sensitive bend sensor with hybrid long-periodand tilted fiber Bragg grating[J].Optics Communications,2010,283(13):2690-2694.
[4]JIANG Xiu-li,GU Zheng-tian.Parameters optimization ofπ-phase-shifted long period fiber grating for gas sensing[J].Optoelectronics Letters,2011,7(1):22-25.
[5]Venugopalan T,Sun T,Grattan K T V.Temperature char-acterization of Long period gratings written in three differ-ent types of optical fibre for potential high temperaturemeasurements[J].Sensors and Actuators A:Physical,2010,160(1-2):29-34.
[6]García-de-la-Rosa L A,Torres-Gómez I,Martínez-Ríos A,et al.Temperature impact on mechanically induced long-period fiber gratings[J].Optics and Lasers in Engineer-ing,2011,49(6):714-717.
[7]Dianov E M,Vasiliev S A,Kurkov A S,et al.In-fiberMach-Zehnder interferometer based on a a pair of long-period gratings[A].Optical Communication,ECOC′96.22nd European Conference on[C].1996,1:65-68.
[8]YAN Ming,LUO Shou-yu,ZHAN Li,et al.Triple-wave-length switchable Erbium-doped fiber laser with cascadedasymmetric exposure long-period fiber gratings[J].Opt.Express,2007,15(7):3685-3691.
[9]Fraz珘ao O,Correia C,Baptista J M,et al.Ring fibre laserwith interferometer based in long period grating for sens-ing applications[J].Optics Communications,2008,281(22):5601-5604.
[10]Kieran Mc Evoy,David N Nikogosyan.Realization of peri-odic transmission filter based on a pair of cascaded long-period fibre gratings of different strength/wavelength po-sition[J].Optics&Laser Technology,2012,44(3):683-687.
[11]Hajime Sakata,Kotaro Honda.Temperature-dependenttransmittance of cascaded long-period fiber gratings forsensor applications[J].Microwave and Optical Technolo-gy Letters,2009,51(8):1809-1811.
[12]Samer K Abi Kaed Bey,Cathy Chung Chun Lam,TongSun,et al.Grattan chloride ion optical sensing using along period grating pair[J].Sensors and Actuators A:Physical,2008,141(2-15):390-395.
[13]Wang Z Y,Heflin J R,Kevin V C,et al.Biosensors emplo-ying ionic self-assembled multilayers adsorbed on long-period fiber gratings[J].Sensors and Actuators B:Chem-ical,2009,139(2):618-623.
[14]ZHOU Rui,QIAO Xue-guang,WANG Ruo-hui.et al.Seis-mic wave interrogation system based on the linear edgefilterchracteristics of long period fiber grating[J].Journalof Optoelectronics.Laser,2011,22(7):987-991.周锐,乔学光,王若晖,等.基于长周期光纤光栅线性边缘滤波的地震波解调系统[J].光电子.激光,2011,22(7):987-991.
[15]Samer K,Abi K B,Tong S,et al.Optimizaiton of a long-period grating-based Mach-Zehnder interferometer fortemperature measurement[J].Optics Communications,2007,272(1):15-21.
[16]Ng M N,Chiang K S.Thermal effects on the transmissionspectra of long-period fiber gratings[J].Optics Commu-nications,2002,208(4-6):321-327.
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